This document focuses on surge protective devices that operate on systems with voltages 1,000 Volts(ac)/1500 Volts(dc) and below. However, it may include cases that involve smart grid equipment attaching or coupling to higher voltage circuits such as electric utility medium voltage distribution. Included within this scope are communications, data acquisition equipment, and associated circuitry and interfaces.
Guidance is given on protecting the variety of mostly electronic equipment that will be added to homes, businesses, government facilities and industrial plants as part of the Smart Grid.